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Some new vulns shortname #11

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@felickz felickz commented Mar 13, 2025 •
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Filter not working correctly

https://github.com/advanced-security/sample-javascript-monorepo/security/code-scanning?query=is%3Aopen+pr%3A11+tag%3Aproject%2Fcli

image

tags are applied appropriately

image

image

gh api "repos/advanced-security/sample-javascript-monorepo/code-scanning/alerts?ref=refs/pull/11/merge" --jq '.[] | {html_url: .html_url, rule_tags: .rule.tags}'
{
  "html_url": "https://github.com/advanced-security/sample-javascript-monorepo/security/code-scanning/13",
  "rule_tags": [
    "external/cwe/cwe-338",
    "project/helpers",
    "security"
  ]
}
{
  "html_url": "https://github.com/advanced-security/sample-javascript-monorepo/security/code-scanning/12",
  "rule_tags": [
    "external/cwe/cwe-338",
    "project/cli",
    "security"
  ]
}

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This pull request sets up GitHub code scanning for this repository. Once the scans have completed and the checks have passed, the analysis results for this pull request branch will appear on this overview. Once you merge this pull request, the 'Security' tab will show more code scanning analysis results (for example, for the default branch). Depending on your configuration and choice of analysis tool, future pull requests will be annotated with code scanning analysis results. For more information about GitHub code scanning, check out the documentation.

github-advanced-security[bot]
github-advanced-security bot found potential problems Mar 13, 2025
View reviewed changes
packages/babel-cli/src/babel/dir.ts
function insecurePassword(): string {
// BAD: the random suffix is not cryptographically secure
const suffix = Math.random();
const password = "myPassword" + suffix;

Check failure

Code scanning / CodeQL

Insecure randomness High

This uses a cryptographically insecure random number generated at
Math.random()
Loading
in a security context.

Copilot Autofix

AI about 2 months ago

To fix the problem, we need to replace the use of Math.random() with a cryptographically secure random number generator. In Node.js, we can use the crypto module's randomBytes function to generate a secure random suffix. This will ensure that the generated password is not easily predictable.

  • Import the crypto module at the beginning of the file.
  • Replace the Math.random() call with crypto.randomBytes to generate a secure random suffix.
  • Convert the random bytes to a suitable format for appending to the password string.
Suggested changeset 1
packages/babel-cli/src/babel/dir.ts

Autofix patch

Autofix patch
Run the following command in your local git repository to apply this patch
cat << 'EOF' | git apply
diff --git a/packages/babel-cli/src/babel/dir.ts b/packages/babel-cli/src/babel/dir.ts
--- a/packages/babel-cli/src/babel/dir.ts
+++ b/packages/babel-cli/src/babel/dir.ts
@@ -3,2 +3,3 @@
 import fs from "fs";
+import crypto from "crypto";
 
@@ -21,4 +22,4 @@
 function insecurePassword(): string {
-  // BAD: the random suffix is not cryptographically secure
-  const suffix = Math.random();
+  // GOOD: the random suffix is cryptographically secure
+  const suffix = crypto.randomBytes(4).toString('hex');
   const password = "myPassword" + suffix;
EOF
@@ -3,2 +3,3 @@
import fs from "fs";
import crypto from "crypto";

@@ -21,4 +22,4 @@
function insecurePassword(): string {
// BAD: the random suffix is not cryptographically secure
const suffix = Math.random();
// GOOD: the random suffix is cryptographically secure
const suffix = crypto.randomBytes(4).toString('hex');
const password = "myPassword" + suffix;
Copilot is powered by AI and may make mistakes. Always verify output.
packages/babel-helpers/src/index.ts
function insecurePassword(): string {
// BAD: the random suffix is not cryptographically secure
const suffix = Math.random();
const password = "myPassword" + suffix;

Check failure

Code scanning / CodeQL

Insecure randomness High

This uses a cryptographically insecure random number generated at
Math.random()
Loading
in a security context.

Copilot Autofix

AI about 2 months ago

To fix the problem, we need to replace the use of Math.random() with a cryptographically secure random number generator. In a Node.js environment, we can use the crypto module's randomBytes method to generate secure random values. We will convert these bytes to a number to append to the password.

Specifically, we will:

  1. Import the crypto module.
  2. Replace the Math.random() call with a call to crypto.randomBytes.
  3. Convert the random bytes to a number suitable for appending to the password.
Suggested changeset 1
packages/babel-helpers/src/index.ts

Autofix patch

Autofix patch
Run the following command in your local git repository to apply this patch
cat << 'EOF' | git apply
diff --git a/packages/babel-helpers/src/index.ts b/packages/babel-helpers/src/index.ts
--- a/packages/babel-helpers/src/index.ts
+++ b/packages/babel-helpers/src/index.ts
@@ -4,2 +4,3 @@
 import type { HelperMetadata } from "./helpers-generated.ts";
+import { randomBytes } from "crypto";
 
@@ -27,4 +28,4 @@
 function insecurePassword(): string {
-  // BAD: the random suffix is not cryptographically secure
-  const suffix = Math.random();
+  // GOOD: the random suffix is cryptographically secure
+  const suffix = randomBytes(4).readUInt32BE(0);
   const password = "myPassword" + suffix;
EOF
@@ -4,2 +4,3 @@
import type { HelperMetadata } from "./helpers-generated.ts";
import { randomBytes } from "crypto";

@@ -27,4 +28,4 @@
function insecurePassword(): string {
// BAD: the random suffix is not cryptographically secure
const suffix = Math.random();
// GOOD: the random suffix is cryptographically secure
const suffix = randomBytes(4).readUInt32BE(0);
const password = "myPassword" + suffix;
Copilot is powered by AI and may make mistakes. Always verify output.
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@felickz